EP2129189A2 - Drahtloses Kommunikationssystem, drahtlose Kommunikationsvorrichtung, Verfahren für Trennungsverfahren dafür und Speichermedium - Google Patents

Drahtloses Kommunikationssystem, drahtlose Kommunikationsvorrichtung, Verfahren für Trennungsverfahren dafür und Speichermedium Download PDF

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Publication number
EP2129189A2
EP2129189A2 EP09153452A EP09153452A EP2129189A2 EP 2129189 A2 EP2129189 A2 EP 2129189A2 EP 09153452 A EP09153452 A EP 09153452A EP 09153452 A EP09153452 A EP 09153452A EP 2129189 A2 EP2129189 A2 EP 2129189A2
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EP
European Patent Office
Prior art keywords
disconnection
frame
advance notice
wireless lan
wireless communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09153452A
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English (en)
French (fr)
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EP2129189A3 (de
EP2129189B1 (de
Inventor
Kifumi Koga
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Fujitsu Ltd
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Fujitsu Ltd
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Publication of EP2129189A3 publication Critical patent/EP2129189A3/de
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Publication of EP2129189B1 publication Critical patent/EP2129189B1/de
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/20—Network architectures or network communication protocols for network security for managing network security; network security policies in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/38—Connection release triggered by timers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/12—Detection or prevention of fraud
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/12—Detection or prevention of fraud
    • H04W12/121—Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS]
    • H04W12/122—Counter-measures against attacks; Protection against rogue devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the embodiments discussed herein relates to disconnection of wireless connection between wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal in a wireless LAN (Local Area Network) system, particularly relates to a wireless communication system and a wireless communication apparatus in which advance notice of disconnection is applied before sending a deauthentication frame for a disconnection process and in which a disconnection process is executed, and relates to a method for a disconnection process thereof.
  • wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal in a wireless LAN (Local Area Network) system
  • a wireless LAN system is popularly used as a communication system of a mobile terminal because the wireless LAN system has outstanding features such as versatility, inexpensiveness, and high flexibility for a position where a wireless LAN terminal is set.
  • a wireless LAN terminal communicates by radio, there are two modes. One is an infrastructure mode where the wireless LAN terminal communicates with another wireless LAN terminal or a node at a wired system via a wireless LAN access point. The other is an ad hoc mode where wireless LAN terminals communicate with each other directly. Protocol of such communication connection and disconnection thereof is set by a communication standard (a series of IEEE 802.11).
  • a disconnection frame (that is, a deauthentication frame) be sent from the wireless LAN access point to the wireless LAN terminal. There is no need to wait a response from the wireless LAN terminal after this disconnection frame was sent from a wireless LAN access point.
  • the wireless LAN access point ends a disconnection process at the time when the disconnection frame has been sent.
  • Japanese Laid-open Patent Publication No. 2007-116258 paragraphs 0080, 0081 and 0082 discloses that when a slave device wirelessly connected to a plurality of wireless system master devices moves from an area of a wireless system master device connected to the slave to an area of another wireless system master device, advance notice of disconnection is sent from the wireless system master device connected to the slave to another wireless system master device. If the slave device determines that radio field intensity of the wireless system master device in the area where the slave device has moved is the highest-intensity, communication with the wireless system master device therein is established, and communication with wireless system master devices other than that of the highest intensity is disconnected.
  • Japanese Laid-open Patent Publication No. 2005-117488 paragraphs 0017 and 0031, and Figs. 1 and 2 ) discloses that an access point is a communication line (or a communication apparatus) used in order that a display and an intercom display and notify notice of communication disconnection, a password, etc. to a client in a specific area while a control unit monitors authentication of a client and time for communication connection, and controls connection with a client. Notice of password change is sent from the control unit of the access point to a client, and it is notified that the line is disconnected if this change order is not obeyed.
  • a communication line or a communication apparatus
  • Japanese Laid-open Patent Publication No. 2005-287030 discloses that a request for dissociation is transmitted from a wireless local area network device of a host device to an access point of a wireless network to turn off a switch of a transceiver of the wireless LAN device.
  • a deauthentication frame sent from a wireless LAN access point is not encrypted.
  • a wireless LAN terminal does not authenticate a sending source.
  • BSSID Basic Service Set Identification
  • BSSID is identification information for making a wireless LAN access point unique.
  • BSSID is commonly a MAC (Media Access Control) address of a wireless interface of a wireless LAN access point. For this, if BSSID corresponds with a wireless LAN access point of a connection destination, a wireless LAN terminal accepts a deauthentication frame, and disconnects wireless LAN connection.
  • a deauthentication frame can be sent from another node easily. Since a sending source is not authenticated, wireless LAN connection can be easily disconnected by an irrelevant node of a third party. This means that disconnection by so-called "spoofing" can be easily performed. This prevents normal operation of a wireless LAN network.
  • Manufactures for security which use the above reversely, exist.
  • the manufactures send a dummy deauthentication frame to interrupt communication if a wireless LAN access point or a wireless LAN terminal, which are not allowed to be used, are detected.
  • Embodiments of one aspect of the present invention relate to wireless connection between wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal, in which it is desirable to improve security of a disconnection process.
  • Such embodiments relate to wireless connection between wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal, in which it is desirable to prevent connection disconnection by disconnection information from any other than that between the above wireless communication apparatuses.
  • Embodiments of the present invention also relate to wireless connection between wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal, in which it is desirable to prevent connection from being disconnected by disconnection information from any other than that between the above wireless communication apparatuses, so as to improve reliability of wireless connection.
  • wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal
  • aspects of embodiments of the invention are a wireless communication system in which a disconnection process is executed by a wireless communication apparatus sending a disconnection frame to an opposite apparatus connected to the apparatus, a wireless communication apparatus therefor and a method for a disconnection process thereof.
  • the wireless communication apparatus sends advance notice of disconnection that notifies disconnection, with a transmission frame before sending the disconnection frame for the disconnection process, toward the opposite apparatus during connection, and after the advance notice of disconnection, the disconnection frame is sent to execute the disconnection process.
  • advance notice of disconnection is issued as notice of sending the disconnection frame before such disconnection process, that is, sending the disconnection frame such as a deauthentication frame.
  • a wireless communication system of an aspect of an embodiment of the invention there is provided a wireless communication system in which a wireless communication apparatus sends a disconnection frame to an opposite apparatus during connection and a disconnection process is executed, the wireless communication apparatus including a processing unit that adds advance notice of disconnection, which notifies the disconnection, to a transmission frame before sending the disconnection frame for the disconnection process toward the opposite apparatus during connection, wherein after sending the advance notice of disconnection, the disconnection frame is sent to the opposite apparatus and the disconnection process is executed.
  • the transmission frame may be any one of a frame expressing broadcast information representing existence of a communication apparatus, a frame representing control information of the communication apparatus and a frame set for the advance notice of disconnection.
  • the transmission frame may be any one of a frame expressing broadcast information representing existence of a communication apparatus, a frame representing control information of the communication apparatus and a frame set for the advance notice of disconnection.
  • a wireless communication apparatus receiving a disconnection frame from an opposite apparatus during connection, and executing a disconnection process, the wireless communication apparatus including a receiving unit that receives a transmission frame from the opposite apparatus during connection; and a processing unit that recognizes disconnection notice from advance notice of disconnection, the advance notice of disconnection being added to a transmission frame, and executes the disconnection process based on the disconnection frame received within stand-by time after receiving the advance notice of disconnection.
  • the opposite apparatus is, for example, a relay measure of a wireless LAN system, that is, a wireless access point
  • the wireless communication apparatus is, for example, a wireless LAN terminal connected with a wireless access point by radio
  • a method for a disconnection process of a wireless communication apparatus receiving a disconnection frame from an opposite apparatus during connection, and executing a disconnection process, the method including recognizing disconnection notice from advance notice of disconnection, the advance notice of disconnection being added to a transmission frame; and executing the disconnection process based on the disconnection frame received within stand-by time after receiving the advance notice of disconnection.
  • a computer readable storage medium storing a disconnection processing program of a wireless communication apparatus that executes a disconnection process by computer by receiving a disconnection frame from an opposite apparatus during connection, the program including the functions of recognizing disconnection notice from advance notice of disconnection, the advance notice of disconnection being added to a transmission frame; and executing the disconnection process based on the disconnection frame received within stand-by time after receiving the advance notice of disconnection.
  • FIG. 1 depicts a wireless LAN system according to a first embodiment.
  • Structure depicted in Fig. 1 is one example, and embodiments of the present invention are not limited to such structure.
  • This wireless LAN system 2 is one example of a wireless communication apparatus, a disconnection processing method and a disconnection processing program.
  • a wireless LAN terminal 6 is connected as a single or a plurality of wireless LAN terminals.
  • advance notice of disconnection 8 is sent from the wireless LAN access point 4.
  • a deauthentication frame hereinafter "a disconnection frame" 10 is sent.
  • the advance notice of disconnection 8 is identification information that notifies disconnection of the wireless LAN terminal 6.
  • the advance notice of disconnection 8 is added to a beacon frame 12 that is a transmission frame.
  • the beacon frame 12 is a frame representing broadcast information that tells of existence of a communication apparatus.
  • the advance notice of disconnection 8 may be added to a transmission frame except the beacon frame 12, for example, a frame representing control information of a communication apparatus (:a control frame). Or, a frame dedicating itself to advance notice of disconnection (:a frame for advance notice of disconnection) may be set.
  • the wireless LAN access point 4 is a wireless communication apparatus that configures a relay means for wireless communication of the wireless LAN terminal 6.
  • the wireless LAN access point 4 is a transmission means for transmitting the disconnection frame 10 to execute a disconnection process to the wireless LAN terminal 6 connected to the wireless LAN access point 4, and is a transmission means for transmitting the advance notice of disconnection 8 before a predetermined time of transmitting the disconnection frame 10.
  • the wireless LAN access point 4 notifies the advance notice of disconnection 8 for disconnecting the wireless LAN terminal 6 with the beacon frame 12 by adding the advance notice of disconnection 8 to a transmission frame if the wireless LAN terminal 6 during connection is disconnected, and after that, a time T as a time interval till the disconnection frame 10 is sent is decided.
  • the advance notice of disconnection 8 includes the time T when the disconnection frame 10 is sent from a time point of advance notice as time information and a stand-by time t (>T) as a predetermined time after the advance notice of disconnection 8 is received, in order to enable reception of the disconnection frame 10.
  • the time T and the stand-by time t need not a constant time. If t>T, the time T and the stand-by time t may be an arbitrary time. An indefinite time can increase probability of avoiding an interrupt of the disconnection frame 10 by an illegal person.
  • the wireless LAN terminal 6 is, for example, a wireless communication apparatus that maintains communication with another wireless LAN terminal and executes reception and transmission of information by means of the wireless LAN access point 4 as a relay means.
  • the wireless LAN terminal 6 is also a receiving means (receiving unit) for receiving a transmission frame from an opposite apparatus connected to the wireless LAN terminal 6, for example, the wireless LAN access point 4.
  • the above described wireless LAN terminal 6 detects whether the advance notice of disconnection 8 exists in the beacon frame 12 sent from the wireless LAN access point 4 during connection.
  • the process moves to a state where a disconnection process executed on the basis of a disconnection frame from the wireless LAN access point 4 is accepted (a disconnection stand-by state).
  • a disconnection stand-by state a state where a disconnection process executed on the basis of a disconnection frame from the wireless LAN access point 4 is accepted.
  • the above stand-by time t that is included in the advance notice of disconnection 8 is stored.
  • a disconnection frame can be received.
  • the wireless LAN terminal 6 returns to a state where a disconnection process from the wireless LAN access point 4 is not accepted (a disconnection process rejection state).
  • the wireless LAN terminal 6 that receives the disconnection frame 10 confirms whether reception of the disconnection frame 10 is within a certain time (the stand-by time t) after the advance notice of disconnection 8 is received from the wireless LAN access point 4. In case of being within the stand-by time t, a disconnection process thereof is accepted and wireless LAN connection is disconnected. If the stand-by time t has passed after reception of the advance notice of disconnection 8, or if the advance notice of disconnection 8 is not received, a disconnection process is not accepted even if the disconnection frame 10 is received, and wireless LAN connection is maintained.
  • the advance notice of disconnection 8 is sent from the wireless LAN access point 4 to the wireless LAN terminal 6.
  • the disconnection frame 10 is sent.
  • the wireless LAN terminal 6 accepts the disconnection frame 10 from the wireless LAN access point 4 that receives the advance notice of disconnection 8, and moves to a disconnection process. For the above, even if the disconnection frame 10 is sent from another wireless LAN access point 4X or other nodes from which the advance notice of disconnection 8 is not issued, a disconnection process of connection thereby is not executed, and wireless connection is maintained.
  • FIG. 2 depicts structure of an access point. Structure depicted in Fig. 2 is one example, and embodiments of the present invention are not limited to such structure.
  • the wireless LAN access point 4 is a computer including a communication function by radio or wire. As depicted in Fig. 2 , included are a CPU (Central Processing Unit) 400, a Flash ROM (Read-Only Memory) 402, a RAM (Random-Access Memory) 404, a clock unit 406, a wireless LAN interface unit 408, a wired LAN interface unit 410 and a power source unit 412.
  • a CPU Central Processing Unit
  • Flash ROM Read-Only Memory
  • RAM Random-Access Memory
  • the CPU 400 is one example of a processing means (processing unit) for executing transmission and reception of information, an advance notice process, a disconnection process, etc., and a control means of various function units.
  • the CPU 400 executes an OS (Operating System) and an application program such as a disconnection process program in the Flash ROM 402.
  • the Flash ROM 402 is one example of a program storing unit and a data storing unit.
  • the Flash ROM 402 stores the above OS and application program, and a data table is provided in the data storing unit thereof.
  • the RAM 404 configures a working area.
  • the clock unit 406 is one example of a timing means.
  • the clock unit 406 times a predetermined time from a time point of issuance of advance notice information of disconnection.
  • the above interval time T is timed by the clock unit 406.
  • the wireless LAN interface unit 408 is a means for wireless connection for the wireless LAN terminal 6, and includes a base band processor 414, a transceiver 416, a power amplifier 418 and an antenna 420.
  • the base band processor 414 is a means for generating a base band signal to send and receive information.
  • the transceiver 416 is a means for generating a transmission signal that is a carrier signal modulated by a base band signal or a means for demodulating a base band signal from a reception signal.
  • the power amplifier 418 is a means for amplifying a transmission signal or a reception signal.
  • the antenna 420 sends out a transmission signal outputted from the power amplifier 418 to the wireless LAN terminal 6 as a wireless signal, or receives a wireless signal from the wireless LAN terminal 6 to input the wireless signal to the power amplifier 418 as a reception signal.
  • the wired LAN interface unit 410 is a wired connection means to a wired LAN terminal not depicted.
  • the power source unit 412 is a power supply means, and supplies driving power to various function units such as the CPU 400 and the wireless LAN interface unit 408.
  • the wireless LAN terminal 6 can be wirelessly connected through the wireless LAN interface unit 408 of the wireless LAN access point 4, the above described advance notice of disconnection 8 is sent to the wireless LAN terminal 6 during connection by the beacon frame 12, and a process of sending the disconnection frame 10 can be executed after the time T has passed since a time point of sending the advance notice of disconnection 8.
  • FIG. 3 depicts structure of a wireless LAN terminal. Structure depicted in Fig. 3 is one example, and embodiments of the present invention are not limited to such structure.
  • the wireless LAN terminal 6 is a computer provided with a communication function by radio with various wireless relay means including the wireless LAN access point 4. As depicted in Fig. 3 , included are a CPU 600, a storage 602, a RAM 604, a clock unit 606, a wireless LAN interface unit 608 and a power source unit 612.
  • the CPU 600 is one example of an information processing means (information processing unit) for transmitting and receiving information, a disconnection process, etc. and a control means of various function units.
  • the CPU 600 executes an OS and an application program such as a disconnection process program subroutine in the storage 602.
  • the storage 602 is one example of a program storing unit and a data storing unit.
  • the storage 602 stores the above OS and application program, and a data table is provided in the data storing unit thereof.
  • the RAM 604 configures a working area.
  • the clock unit 606 is one example of a timing means.
  • the clock unit 606 times the stand-by time t from a time point of issuance of the advance notice of disconnection 8.
  • the disconnection frame 10 can be accepted until this stand-by time t has passed.
  • the wireless LAN interface unit 608 is a means for wireless connection for the wireless LAN access point 4, and includes a base band processor 614, a transceiver 616, a power amplifier 618 and an antenna 620.
  • the base band processor 614 is a means for generating a base band signal to send and receive information.
  • the transceiver 616 is a means for generating a transmission signal that is a carrier signal modulated by a base band signal or a means for demodulating a base band signal from a reception signal.
  • the power amplifier 618 is a means for amplifying a transmission signal or a reception signal.
  • the antenna 620 sends out a transmission signal outputted from the power amplifier 618 to the wireless LAN access point 4 as a wireless signal, or receives a wireless signal from the wireless LAN access point 4 to input the wireless signal to the power amplifier 618 as a reception signal.
  • the power source unit 612 is a power supply means, and supplies driving power to various function units such as the CPU 600 and the wireless LAN interface unit 608.
  • wireless connection to the wireless LAN access point 4 can be performed through the wireless LAN interface unit 608, if the above described advance notice of disconnection 8 is received from the wireless LAN access point 4 during connection, reception of the disconnection frame 10 is waited for the stand-by time t after the advance notice of disconnection 8, and based on reception of the disconnection frame 10, a disconnection process can be executed.
  • FIG. 4 depicts a disconnection notice frame. Structure depicted in Fig. 4 is one example, and the present invention is not limited to such structure. In Fig. 4 , the same components as those in Fig. 1 are denoted by the same reference numerals.
  • This disconnection notice frame 80 is one example of identification information representing advance notice of disconnection, and one example of a method of adding an information element as advance notice of disconnection to the beacon frame 12.
  • a MAC (Medium Access Control) header 81, a frame body 82 and an FCS (Frame Check Sequence) 83 are included in the disconnection notice frame 80.
  • the beacon frame 12 is information for broadcasting various information necessary for communication with a periphery wireless station, and is sent by a base station (in this case, a wireless LAN access point) periodically.
  • the beacon frame 12 plays a role of notifying existence of a wireless cell to a terminal station (in this case, a wireless LAN terminal).
  • the MAC header 81 includes frame control information, duration/ID, an address of a sending destination, an address of a sending source, BSS (Basic Service Set) ID and sequence control information.
  • the duration/ID is time when a wireless line is scheduled to be used.
  • the address of a sending destination is an address of a wireless LAN terminal, which is a sending destination.
  • the address of a sending source is an address of a wireless LAN access point, which is a sending source.
  • the BSSID is identification information of a BSS, that is, a wireless cell, and is expressed by a MAC address of a wireless LAN access point, which is a base station.
  • the sequence control information represents a sequence number of a MAC frame and a fragment number for fragment.
  • the frame body 82 is a storing unit for transmission data.
  • a disconnection information element 825 representative of the advance notice of disconnection 8 is set for the frame body 82 along with information 821, a value 822, information 823 and a value 824.
  • This disconnection information element 825 stores disconnection notice ID 8251 and a terminal MAC address/stand-by time 8252.
  • the information 821, the value 822, the information 823 and the value 824 represent transmission data and the volume of data thereof.
  • the disconnection notice ID 8251 is advance notice of disconnection information.
  • a terminal MAC address representing a wireless LAN terminal that disconnection notice is notified to, and the above stand-by time t since disconnection notice are set for the terminal MAC address/stand-by time 8252.
  • the FCS 83 is a storing unit for an error detection code.
  • error detection codes of the MAC header 81 and the frame body 82 are stored.
  • disconnection notice frame 80 is sent to the wireless LAN terminal 6 that is an object of disconnection before the disconnection frame 10 is sent, an object of disconnection is identified by a terminal MAC address in the wireless LAN terminal 6 receiving the disconnection notice frame 80 and the stand-by time t when the disconnection frame 10 since disconnection notice is accepted is set. If the disconnection frame 10 arrives within the stand-by time t, a disconnection process is executed.
  • FIG. 5 is a flowchart depicting processing procedure of a wireless LAN access point. Structure depicted in Fig. 5 is one example, and embodiments of the present invention are not limited to such structure.
  • This processing procedure is one example of a method for a disconnection process and a disconnection processing program, is a process at a wireless LAN access point side, and includes a process of adding the stand-by time t.
  • step S11 whether a wireless LAN terminal is about to be disconnected is determined (step S11). If so (YES of step S11), the time interval T between sending of advance notice of disconnection and sending of a disconnection frame is determined (step S12). Timing when advance notice of disconnection can be sent is waited (step S13), and whether timing is when advance notice of disconnection can be sent is determined (step S14). If timing is when advance notice of disconnection can be sent (YES of step S14), advance notice of disconnection is added to, for example, the beacon frame 12 as a frame for notice, and is sent (step S15). If timing is not when advance notice of disconnection can be sent (NO of step S14), a stand-by state for sending advance notice of disconnection is started.
  • step S16 If advance notice of disconnection is sent, the process waits for infinitesimal time (step S16), and it is determined whether the stand-by time t has passed since advance notice of disconnection (step S17). If the stand-by time t has passed (YES of step S17), a disconnection frame for a disconnection process is sent (step S18) and the process is ended.
  • FIG. 6 is a flowchart showing processing procedure of a wireless LAN terminal. Structure depicted in Fig. 6 is one example, and embodiments of the present invention are not limited to such structure.
  • This processing procedure is one example of a method for a disconnection process and a disconnection processing program, and is a process at a wireless LAN terminal side corresponding to the flowchart in Fig. 5 .
  • step S21 whether to be currently in a disconnection stand-by state is determined. If in a disconnection stand-by state (YES of step S21), the process waits for infinitesimal time (step S 22). It is determined whether to be within the stand-by time t or not since entering into a disconnection stand-by time state (step S23). If within the stand-by time state t (YES of step S23), whether the disconnection frame 10 is received is determined (step S24). If the disconnection frame 10 is received (YES of step S24), a disconnection process is executed (step S25) and the process is ended.
  • step S21 if not currently in a disconnection stand-by state (NO of step S21), whether the disconnection frame 10 is received is determined (step S26). If the disconnection frame 10 is received (YES of step S26), the disconnection frame 10 is ignored (step S27) and the process returns to step S21.
  • step S26 if the disconnection frame 10 is not received (NO of step S26), whether the advance notice frame of disconnection 8 is received is determined (step S28). Unless the advance notice frame of disconnection 8 is received (NO of step S28), the process returns to step S21. If the advance notice frame of disconnection 8 is received (YES of step S28), whether the stand-by time t is included in the advance notice frame of disconnection 8 is determined (step S29). If the stand-by time t is included (YES of step S29), the stand-by time t is stored in a storage (a data storing unit) (step S30). Unless the stand-by time t is included in the advance notice frame of disconnection 8 (NO of step S29), the process moves to a disconnection stand-by state (step S31) and returns to step S21.
  • step S23 if not being within the stand-by time t since entering into a disconnection stand-by state, that is, after the stand-by time t has passed (NO of step S23), a disconnection stand-by state is cancelled (step S32) and the process returns to step S21.
  • FIG. 7 is a flowchart showing a processing sequence between a wireless LAN access point and a wireless LAN terminal. Structure depicted in Fig. 7 is one example, and embodiments of the present invention are not limited to such structure.
  • This processing procedure is one example of a method for a disconnection process and a disconnection processing program.
  • a beacon frame in which advance notice of disconnection is regarded as a frame for notice is exemplified.
  • advance notice of disconnection may be added to a control frame instead of a beacon frame.
  • advance notice of disconnection is added to a beacon frame (or a control frame) and sent, from the wireless LAN access point 4 (step S101).
  • the process moves to a disconnection stand-by state (step S102). If the stand-by time t is included in advance notice of disconnection, the stand-by time t is stored (step S103) and a disconnection stand-by state is maintained.
  • the wireless LAN access point 4 sends a disconnection frame after sending of advance notice of disconnection and after the time interval T has passed (step S104).
  • the wireless LAN terminal 6 receives this disconnection frame (step S105), and determines whether the stand-by time t has passed since advance notice of disconnection is received (step S106). Unless the stand-by time t has passed, that is, if within the stand-by time t (No of step S106), a disconnection process is accepted, and wireless LAN connection is disconnected (step S107).
  • step S106 If the stand-by time t has passed, that is, if a disconnection frame is received after the stand-by time t (YES of step S106), reception of a disconnection frame is ignored and without executing a disconnection process, wireless LAN connection is continued (step S108).
  • FIGs. 8A-8C are timing charts depicting operation when a disconnection process or connection continuation is executed. Structure depicted in Figs. 8A-8C is one example, and the present invention is not limited to such structure.
  • A0 is advance notice of disconnection issued from the wireless LAN access point 4
  • A1 is a disconnection frame issued from the wireless LAN access point 4
  • AX is a disconnection frame issued from the wireless LAN access point 4X.
  • the disconnection frame (A1) is issued from the wireless LAN access point 4 after the time interval T since the advance notice of disconnection (A0). Because this disconnection frame (A1) is received in the stand-by time t of the wireless LAN terminal 6 in a disconnection stand-by state, as depicted in Fig. 8C , the disconnection frame (A1) is accepted by the wireless LAN terminal 6, and the above described disconnection process is executed in the wireless LAN terminal 6.
  • the disconnection frame (AX) that is issued from another wireless LAN access point 4X is ignored since issuance thereof is after the stand-by time t.
  • the disconnection frame (AX) is issued from the wireless LAN access point 4X, the disconnection frame (AX) is ignored at time points except the stand-by time t. The process does not move to a disconnection process thereby. Even if the disconnection frame (AX) arrives from the wireless LAN access point 4X within the stand-by time t thus a disconnection process thereby is executed, there is no inconvenience since the process is already in a disconnection stand-by state.
  • FIG. 9 depicts processing procedure of advance notice of disconnection according to a second embodiment.
  • Structure depicted in Fig. 9 is one example, and embodiments of the present invention are not limited to such structure.
  • advance notice of disconnection is generated, a process is executed that advance notice of disconnection is added to a beacon frame or a control frame. If advance notice of disconnection is encrypted, security can be more improved.
  • This processing procedure is, after generation of advance notice of disconnection, to add an encryption process.
  • generation of advance notice of disconnection is executed (step S41)
  • an encryption process is performed on this advance notice of disconnection (step S42) and the encrypted advance notice of disconnection is added to a beacon frame (step S43). After this process, sending is performed.
  • a beacon frame is exemplified. Encrypted advance notice of disconnection may be added to a control frame.
  • a beacon frame or a control frame sent from a wireless LAN access point 4 advance notice of disconnection is decrypted by an encryption key used in data communication.
  • advance notice of disconnection to the wireless LAN terminal 6 is added, if just after sending the beacon frame or the control frame, a disconnection frame received from the wireless LAN access point 4 is accepted.
  • advance notice of disconnection is not added to a beacon frame or a control frame, or when not just after sending thereof, only a disconnection frame from a legal access point may be accepted by ignoring a disconnection frame.
  • addition of advance notice of disconnection after encryption by an encryption key used in data communication with a wireless LAN terminal to be notified can make only a wireless LAN terminal of an object of disconnection receive advance notice of disconnection. If seen from a wireless LAN terminal side, attack to send advance notice of disconnection by an irrelevant wireless LAN node spoofing a wireless LAN access point during connection can be prevented.
  • FIG. 10 is a flowchart showing processing procedure of a wireless LAN access point according to a third embodiment. Structure depicted in Fig. 10 is one example, and embodiments of the present invention are not limited to such structure.
  • the time interval T is set between sending of advance notice of disconnection and sending of a disconnection frame. Without setting of the time interval T, advance notice of disconnection may be sent at optional timing when advance notice of disconnection can be sent.
  • step S51 whether a wireless LAN terminal is about to be disconnected is determined. If so (YES of step S51), timing when advance notice of disconnection can be sent is waited (step S52), and whether timing is when advance notice of disconnection can be sent is determined (step S53). If timing is when advance notice of disconnection can be sent (YES of step S53), advance notice of disconnection is added to, for example, a beacon frame 12 as a frame for notice, and is sent (step S54). If timing is not when advance notice of disconnection can be sent (NO of step S53), a stand-by state for sending advance notice of disconnection is started.
  • step S55 If advance notice of disconnection is sent, the process waits for infinitesimal time (step S55), and it is determined whether a stand-by time t has passed since advance notice of disconnection (step S56). If the stand-by time t has passed (YES of step S55), a disconnection frame for a disconnection process is sent (step S57) and the process is ended.
  • FIG. 11 is a flowchart depicting processing procedure of a wireless LAN access point according to a fourth embodiment. Structure depicted in Fig. 11 is one example, and embodiments of the present invention are not limited to such structure.
  • the stand-by time t is set. Without setting the stand-by time t, a disconnection frame may be sent at optional timing when a disconnection frame can be sent.
  • step S61 whether a wireless LAN terminal is about to be disconnected is determined. If so (YES of step S61), timing when advance notice of disconnection can be sent is waited (step S62), and whether timing is when advance notice of disconnection can be sent is determined (step S63). If timing is when advance notice of disconnection can be sent (YES of step S63), advance notice of disconnection is added to, for example, a beacon frame as a frame for notice, and is sent (step S64). If timing is not when advance notice of disconnection can be sent (NO of step S63), a stand-by state for sending advance notice of disconnection is started. If advance notice of disconnection is sent, the process waits for infinitesimal time (step S65), a disconnection frame for a disconnection process is sent (step S66) and the process is ended.
  • a wireless LAN access point notifies a wireless LAN terminal of interval between sending of advance notice of disconnection and sending of a disconnection frame as the stand-by time t. If the stand-by time t is fixed as a fixing value by a standard, etc., and both of a wireless LAN access point and a wireless LAN terminal know the stand-by time t, the stand-by time t may not be included in advance notice of disconnection. In this case, a wireless LAN terminal may use the stand-by time t that the wireless LAN terminal itself records as a period for waiting since reception of advance notice of disconnection.
  • FIG. 12 is a flowchart depicting processing procedure of a wireless LAN access point according to a fifth embodiment
  • Fig. 13 is a flowchart depicting processing procedure of a wireless LAN terminal. Structure depicted in Figs. 12 and 13 are one example, and embodiments of the present invention are not limited to such structure.
  • infinitesimal time stand-by (step S65) is set.
  • This infinitesimal time stand-by that is, certain time stand-by may be omitted, and a disconnection frame may be sent at optical timing when the disconnection frame can be sent.
  • step S71 whether a wireless LAN terminal is about to be disconnected is determined. If so (YES of step S71), timing when advance notice of disconnection can be sent is waited (step S72), and whether timing is when advance notice of disconnection can be sent is determined (step S73). If timing is when advance notice of disconnection can be sent (YES of step S73), advance notice of disconnection is added to, for example, a beacon frame as a frame for notice, and is sent (step S74). If timing is not when advance notice of disconnection can be sent (NO of step S73), a stand-by state for sending advance notice of disconnection is started. After sending this advance notice of disconnection, a disconnection frame for a disconnection process at optional timing is sent (step S75) and the process is ended.
  • step S81 in processing procedure of a wireless LAN terminal 6, as depicted in Fig. 13 , whether to be currently in a disconnection stand-by state is determined (step S81). If in a disconnection stand-by state (YES of step S81), the process waits for certain time (step S82). It is determined whether to be within certain time or not since entering into a disconnection stand-by time state (step S83). If within certain time (YES of step S83), whether a disconnection frame 10 is received is determined (step S84). If the disconnection frame 10 is received (YES of step S84), a disconnection process is executed (step S85) and the process is ended.
  • step S81 if not in a disconnection stand-by state currently (NO of step S81), whether the disconnection frame 10 is received is determined (step S86). If the disconnection frame 10 is received (YES of step S86), the disconnection frame 10 is ignored (step S87) and the process returns to step S81.
  • step S86 if the disconnection frame 10 is not received (NO of step S86), whether advance notice frame of disconnection is received is determined (step S88). Unless the advance notice frame of disconnection is received (NO of step S88), the process returns to step S81. If the advance notice frame of disconnection is received (YES of step S88), the process moves to a disconnection stand-by state (step S89) and returns to step S81.
  • step S83 if certain time has passed since entering into a disconnection stand-by state (NO of step S83), a disconnection stand-by state is cancelled (step S90) and the process returns to step S81.
  • Appendix 2 The wireless communication system of appendix 1, wherein
  • a wireless communication apparatus sending a disconnection frame to an opposite apparatus during connection, and executing a disconnection process, the wireless communication apparatus comprising:
  • a wireless communication apparatus receiving a disconnection frame from an opposite apparatus during connection, and executing a disconnection process, the wireless communication apparatus comprising:
  • Appendix 16 The method for a disconnection process of a wireless communication apparatus of appendix 14, comprising
  • a computer readable storage medium storing a disconnection processing program of a wireless communication apparatus that executes a disconnection process by computer by sending a disconnection frame to an opposite apparatus during connection, the program comprising the functions of:
  • a computer readable storage medium storing a disconnection processing program of a wireless communication apparatus that executes a disconnection process by computer by receiving a disconnection frame from an opposite apparatus during connection, the program comprising the functions of:
  • the embodiments of the invention relate to disconnection of wireless connection between wireless communication apparatuses such as wireless connection between a wireless LAN access point and a wireless LAN terminal in a wireless LAN (Local Area Network) system. If advance notice of disconnection is not accepted, a disconnection process is not executed even if a disconnection frame is sent. Thus, security of communication connection and a disconnection process thereof can be improved. Therefore, the embodiments of the present invention are useful.
  • the invention also provides a computer or a computer program product for carrying out any of the methods described herein, and a computer readable medium having stored thereon a program for carrying out any of the methods described herein.
  • a computer program embodying the invention may be stored on a computer-readable medium, or it could, for example, be in the form of a signal such as a downloadable data signal provided from an Internet website, or it could be in any other form.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105163335A (zh) * 2015-07-31 2015-12-16 腾讯科技（深圳）有限公司 一种网络接入管理方法、服务器、移动终端以及系统
CN108696909A (zh) * 2018-06-27 2018-10-23 努比亚技术有限公司 网络连接的提醒方法、终端及计算机可读存储介质

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5175898B2 (ja) * 2010-05-21 2013-04-03 Ｎｅｃアクセステクニカ株式会社 無線通信装置、接続解除方法、およびプログラム
CN102348050A (zh) * 2010-08-03 2012-02-08 国基电子（上海）有限公司 数码照相设备及其获取地理标签的方法
US9554330B2 (en) 2011-11-25 2017-01-24 Nec Communication Systems, Ltd. Wireless communication device
JP5858464B2 (ja) * 2011-11-25 2016-02-10 日本電気通信システム株式会社 無線通信装置、無線通信装置制御方法、無線通信装置制御プログラム、無線通信システム、無線通信システム制御方法、制御装置、制御装置制御方法、及び、制御装置制御プログラム
CN102970728B (zh) * 2012-11-02 2016-08-10 小米科技有限责任公司 一种消息通知方法及装置
JP5707425B2 (ja) * 2013-01-07 2015-04-30 株式会社東芝 通信システム
CN104735816A (zh) * 2013-12-23 2015-06-24 中兴通讯股份有限公司 控制无线网络直连群组中无线设备断开的方法及无线设备
DE102016221233B3 (de) * 2016-10-27 2017-09-14 Volkswagen Aktiengesellschaft Verfahren zum Verwalten einer ersten Kommunikationsverbindung, System umfassend einen ersten Kommunikationspartner und einen zweiten Kommunikationspartner sowie Fahrzeug
CN107249189A (zh) * 2017-06-26 2017-10-13 深圳传音通讯有限公司 Wifi连接方法、第一终端、第二终端及wifi连接系统
CN109618421B (zh) * 2019-01-14 2021-04-30 Oppo广东移动通信有限公司 一种重新连接ap的方法及装置、终端、存储介质
JP7433778B2 (ja) 2019-05-10 2024-02-20 キヤノン株式会社 通信装置、通信装置の制御方法およびプログラム
CN111417120A (zh) * 2020-03-27 2020-07-14 中国人民解放军战略支援部队信息工程大学 一种基于去认证消息重构的WiFi热点和终端通信阻断方法
US11374965B2 (en) * 2020-07-23 2022-06-28 Hewlett Packard Enterprise Development Lp Method and system for DOS detection, mitigation and notification

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005117488A (ja) 2003-10-09 2005-04-28 Toshiba Corp 無線ｌａｎサービスシステムおよび同システムのプログラム
JP2005287030A (ja) 2004-03-26 2005-10-13 Hewlett-Packard Development Co Lp 無線ローカルエリアネットワークにおいて復帰イベントを監視するシステムおよび方法
JP2007116258A (ja) 2005-10-18 2007-05-10 Sharp Corp 電波干渉回避のための無線通信システムおよび電子機器

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5722068A (en) * 1994-01-26 1998-02-24 Oki Telecom, Inc. Imminent change warning
US5566171A (en) * 1995-03-15 1996-10-15 Finisar Corporation Multi-mode high speed network switch for node-to-node communication
JP3592004B2 (ja) * 1996-10-31 2004-11-24 キヤノン株式会社 情報共有管理システム及び情報共有システム管理装置と方法
ATE383723T1 (de) * 2000-11-28 2008-01-15 Ericsson Telefon Ab L M Teilnehmergerät-abbau mittels eines rufverfahrens in einem zellularen kommunikationssystem
US7051104B1 (en) * 2000-12-21 2006-05-23 Cisco Technology, Inc. System and method for extending the ITU Q.922 LAPF virtual circuit disconnect logic to prevent unsynchronized virtual circuit establishment
US6985979B2 (en) * 2001-12-17 2006-01-10 Matsushita Electric Industrial Co., Ltd. Digital data processing device, bus controlling method, bus controlling program and recording medium
DE60222227T2 (de) * 2001-12-26 2008-01-10 Kabushiki Kaisha Toshiba Kommunikationssystem, drahtlose Kommunikationsvorrichtung und Kommunikationsverfahren
KR100420952B1 (ko) * 2002-01-16 2004-03-02 한국전자통신연구원 전광네트워크에서 자원예약 프로토콜을 이용한 네트워크연결 해제 방법
US20030152030A1 (en) * 2002-02-12 2003-08-14 Stephen Hershey Method and system for delayed connection release protocol
JP3749205B2 (ja) * 2002-07-19 2006-02-22 日本電信電話株式会社 マルチレイヤパスネットワークおよびノード
ES2295285T3 (es) 2002-09-26 2008-04-16 Vkr Holding A/S Metodo para controlar el funcionamiento de un sistema de comunicacion que comprende al menos un transmisor y/o un receptor y uso de tal metodo o tal sistema.
US7379971B2 (en) * 2002-11-19 2008-05-27 Microsoft Corporation Time-to-disconnect enforcement when communicating with wireless devices that have transient network addresses
CN100334848C (zh) * 2003-01-28 2007-08-29 华为技术有限公司 一种控制用户终端在不同网络间切换的实现方法
JP4115354B2 (ja) * 2003-07-04 2008-07-09 富士フイルム株式会社 ピア・ツー・ピア通信システム
US8005054B2 (en) * 2003-08-08 2011-08-23 Sony Corporation Communication system, communication method, communication terminal device, control method thereof, and program
US7283506B2 (en) * 2003-10-13 2007-10-16 Nokia Corporation System and method for releasing sessions at network entities associated with the sessions
JP2005184335A (ja) * 2003-12-18 2005-07-07 Oki Electric Ind Co Ltd 無線通信装置における誤同期防止装置
CN1330214C (zh) * 2004-02-02 2007-08-01 华为技术有限公司 无线局域网用户终端重新选择运营网络的交互方法
KR100605625B1 (ko) * 2004-06-17 2006-07-31 엘지전자 주식회사 유엠티에스시스템의 세션해제방법
CN100544253C (zh) * 2004-07-22 2009-09-23 中兴通讯股份有限公司 无线局域网移动终端的安全重认证方法
US7529354B2 (en) 2004-08-10 2009-05-05 Nokia Corporation Method of managing a connection release, corresponding system and device
EP1779578B1 (de) * 2004-08-12 2009-12-30 VIA Telecom Co., Ltd. Aktive auswahl der bestätigungsquelle
US7904094B2 (en) * 2004-10-27 2011-03-08 Motorola Mobility, Inc. Method for reducing wireless communication procedure failure
KR100698665B1 (ko) * 2004-12-09 2007-03-23 주식회사 팬택앤큐리텔 이동통신 단말기의 휴지 상태에서의 ｐｐｐ 세션 종료시스템 및 방법
JP2006338374A (ja) * 2005-06-02 2006-12-14 Fujitsu Ltd ネットワーク接続管理装置およびネットワーク接続管理方法
TWI373253B (en) * 2005-06-14 2012-09-21 Ntt Docomo Inc Poc server, poc terminal, floor control method, and poc terminal control method
US20060294245A1 (en) * 2005-06-22 2006-12-28 Newstep Networks, Inc. Method and system for a communications session join function to facilitate the provision of enhanced communications services
US20070073808A1 (en) * 2005-09-23 2007-03-29 Alan Berrey Mobile messaging system
US20070089163A1 (en) * 2005-10-18 2007-04-19 International Business Machines Corporation System and method for controlling security of a remote network power device
JP4603494B2 (ja) * 2006-02-14 2010-12-22 富士通株式会社 伝送装置および学習情報保全方法
JP4785671B2 (ja) * 2006-08-18 2011-10-05 富士通株式会社 無線通信システム
US8850012B2 (en) * 2006-08-21 2014-09-30 Nokia Corporation Mechanism for charging and session handling supporting forking
US7818460B2 (en) * 2006-12-04 2010-10-19 Electronics And Telecommunications Research Institute Hardware device and method for transmitting network protocol packet
US20090131017A1 (en) * 2007-11-15 2009-05-21 Airwalk Communications, Inc. System, method, and computer-readable medium for access restriction of user equipment devices in an ip-femtocell system
US7808998B2 (en) * 2008-01-31 2010-10-05 Cisco Technology, Inc. Disconnected transport protocol connectivity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005117488A (ja) 2003-10-09 2005-04-28 Toshiba Corp 無線ｌａｎサービスシステムおよび同システムのプログラム
JP2005287030A (ja) 2004-03-26 2005-10-13 Hewlett-Packard Development Co Lp 無線ローカルエリアネットワークにおいて復帰イベントを監視するシステムおよび方法
JP2007116258A (ja) 2005-10-18 2007-05-10 Sharp Corp 電波干渉回避のための無線通信システムおよび電子機器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105163335A (zh) * 2015-07-31 2015-12-16 腾讯科技（深圳）有限公司 一种网络接入管理方法、服务器、移动终端以及系统
CN105163335B (zh) * 2015-07-31 2019-04-26 腾讯科技（深圳）有限公司 一种网络接入管理方法、服务器、移动终端以及系统
CN108696909A (zh) * 2018-06-27 2018-10-23 努比亚技术有限公司 网络连接的提醒方法、终端及计算机可读存储介质

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